Priming of Immune System in Tomato by Treatment with Low Concentration of L-Methionine.
Int J Mol Sci
; 25(12)2024 Jun 07.
Article
de En
| MEDLINE
| ID: mdl-38928022
ABSTRACT
Various metabolites, including phytohormones, phytoalexins, and amino acids, take part in the plant immune system. Herein, we analyzed the effects of L-methionine (Met), a sulfur-containing amino acid, on the plant immune system in tomato. Treatment with low concentrations of Met enhanced the resistance of tomato to a broad range of diseases caused by the hemi-biotrophic bacterial pathogen Pseudomonas syringae pv. tomato (Pst) and the necrotrophic fungal pathogen Botrytis cinerea (Bc), although it did not induce the production of any antimicrobial substances against these pathogens in tomato leaf tissues. Analyses of gene expression and phytohormone accumulation indicated that Met treatment alone did not activate the defense signals mediated by salicylic acid, jasmonic acid, and ethylene. However, the salicylic acid-responsive defense gene and the jasmonic acid-responsive gene were induced more rapidly in Met-treated plants after infection with Pst and Bc, respectively. These findings suggest that low concentrations of Met have a priming effect on the phytohormone-mediated immune system in tomato.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Maladies des plantes
/
Facteur de croissance végétal
/
Solanum lycopersicum
/
Régulation de l'expression des gènes végétaux
/
Botrytis
/
Cyclopentanes
/
Pseudomonas syringae
/
Méthionine
Langue:
En
Journal:
Int J Mol Sci
Année:
2024
Type de document:
Article
Pays d'affiliation:
Japon
Pays de publication:
Suisse